Start-up noises on my blues jr...

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Ozro4, Feb 19, 2009.


  1. Ozro4

    Ozro4 Member

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    I got a tweed Blues Jr. about 9 months ago, and recently it's been acting up. Whenever I turn it on, it starts making some crazy popping/crackling noises, and the actual guitar sound will fade in and out. After about 2-3 minutes of being on, it works fine and sounds great.

    I know the problem is in between the "volume" and "master" knobs, but that's about all I can figure out with my limited knowledge. Can anyone lend a hand?
     
  2. Ozro4

    Ozro4 Member

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    Bump...anyone got any ideas?
     
  3. jlagrassa

    jlagrassa Supporting Member

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    possibly a power tube not seating right in the socket, do the tubes feel loose. try retensioning the sockets or just try cleaning the sockets with some Deoxit!
     
  4. rogwerks

    rogwerks Member

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    did u buy it new??

    soundz like WARRANTY if so...
     
  5. rockon1

    rockon1 Member

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    Sounds like a bad tube. Try your back up set. You could try reseating the old ones first though. Bob
     
  6. Gene

    Gene Member

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    I know exactly the problem. This is a Fender design flaw. There is actually a Fender tech note published regarding this problem.

    If you are in NYC, I'll fix it for you.
     
  7. Ozro4

    Ozro4 Member

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    Thanks for the help. I tried checking all the tubes, making sure they're in place - they seemed to be fine. TBH, I don't know much about tubes, and I don't have an extra set lying around. Unfortunately, I think the warranty has expired (I can't remember if I got extended, I'll need to check).

    Gene, I'll actually be in NYC next week, but unfortunately my amp's not coming with me. What should I tell someone about the design flaw if I want to get it fixed? Do you have a link to that tech note?
     

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